硅粉和聚丙烯纤维对透水混凝土力学性能的影响

H. Ibrahim
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引用次数: 1

摘要

本文以硅粉作为灰火山灰水泥浆体的补强剂,研究了不同掺量百分比(0%、5%、10%、15%、20%)减重对混凝土力学性能的影响。高范围减水剂的加入,以减少混凝土的需水量,当硅粉的加入。此外,(0.025%,0.05%,0.1%和0.15%)是聚丙烯纤维(P.P.F.)的体积比例,用于改善透水混凝土的机械性能,物理和硬化混凝土的机械性能,包括孔隙比,抗压强度,抗弯强度和劈裂抗拉强度。试验得到参考透水混凝土在28天的密度为(1835 Kg/m3),渗透系数(K)和孔隙率分别为(0.324)cm/s和(30.21%),掺硅灰透水混凝土的抗压强度、劈裂抗拉强度和抗弯强度均较参考透水混凝土有显著提高。(10%)的(SF)和(0.1%)的(P.P.F.)混合物的抗压、抗弯和劈裂抗拉强度分别比参考混合物和结果(47.8%、29.21%和24.41%)有最佳提高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of Silica Fume and Polypropylene Fibers on the Mechanical Properties of Pervious Concrete
In this paper, Silica Fume (S.F.) be used for reinforce pozzolanic cement paste and the effect of using many weight percentages as (0%, 5%, 10%, 15%, and 20%) to lessening the concrete weight as a cement replacement in concrete mixtures on the mechanical properties was studied. High range water reducing added to decrease the water demand of the concrete, when silica fume added. Moreover, (0.025%, 0.05%, 0.1%, and 0.15%) are the proportions of polypropylene Fibers (P.P.F.) by volume, which used to improve the pervious concrete mechanical properties, physical, and mechanical properties of hardened concrete containing voids ratio, compression strength, and flexural strength and, splitting tensile strength investigated. The density of reference pervious concrete that was get through the experimental work was( 1835 Kg/m3 ) at (28) days ,it permeability coefficient (K) and voids content was( 0.324) cm/s, and (30.21%) successively, The results shown important increase in compression, splitting tensile and flexural strengths of pervious concrete containing silica fume and (P.P.F.) comparison with reference pervious concrete. The mixture of (10%) of (SF) and (0.1%) of (P.P.F.) gave optimum increased in the compressive, flexural, and splitting tensile strengths compared with the reference mix and the results (47.8%, 29.21%, and 24.41%) respectively.
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